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New version of UPMSv3 - universal PSP Unbricker/Downgrader/Upgrader, also known as Pandora's Ultimate Magic Stick, Now work with DC ver4 (Dark_AleX’s), for installing CFw 3.80M33-5
and creating memory stick into a “Ultimate Magic Stick” for use with
“Pandora’s battery” (jigkick). Works for both PSP, Slim and/or Fat, and
1 stick for all functions for Unbricker/Downgrader tools. Also
available is the “UPMS_v3.pdf Guide” to help you get started and usage.

The Ultimate Pandora’s Magic Stick is the simple solution to easily accomplish any of the following:

Boot up PSP using Ultimate Loader with support for choosing which Pandora’s you reach V1, V3 or V4.

Boot up PSP to XMB with UPMS inserted-Fat Only.

Boot up to a full FW 1.50 from Memory Stick-Fat Only.

Use PSP Filer and other tools (If it requires 1.50, can’t for Slims).

Note: This software is free, and comes
with no warranty. Despite it has been tested and it has worked, there
is some risk with any PSP operation that involves flashing, so please
try this at your own risk!.

This article will explain a diagram of PSP CFw 3.71 installation. I have provided this document as a guide to helps PSP Users get started for installation CFw 3.71M33-2 with 1.50 kernel Addon2 on both PSP, Fat and Slims. here's a simple steps to find out.

Q:How do I know what version of the firmware I have?A:Follow this, <b>Version check :</b> Go to the PSP Menu and move across to the "Settings Menu". Scroll down, select to "System Settings" >> "System Information" and you should see version of your PSP.

Q:How do I boot into "Recovery Mode",?A:Do a full turn off (hold power button >5sec) and hold the "R-trigger" while turn on the psp.

Q:How do I activated the plugin No-UMD of CFw M33.?A:Do this via "Recovery Mode" >> "Configuration" >> "UMD Mode" >> Select currently : "M33 Driver - No UMD". Any 4 option umd mode you can select, we recommended to select "Sony NP9660" for most games compatibles.

Q:I getting a blank screen/BSOD when booting my PSP, after downgrading my psp with pandora's?A:Press "Bright" button on PSP, You will get a message for telling You to press "Circle" (O). Do it, and reenter your settings. Reboot your PSP if necessary.

http://www.megaupload.com/?d=EDLLJ6J5Update From PSP 1000 or PSP 2000 v1 or v2 That Has Cfw that is at least 5.00 m33-6 and have at least 75% bat.How To Install:1.Download it2.Extract3.Copy the 550.PBP To MS Root what u see when u open up the psp folder4.Copy Update under PSP/Games/Update in the file to PSP/Games5.Run the installer and click enter then click on install flash CFW 5.50 gen-D (the first option)

is that the sony official firmware or is it custom firmware also know as CFW. you will have to have cfw installed on your psp to be able to play downloaded games. on your psp go to SETTINGS> SYSTEM SETTINGS> SYSTEM INFORMATION in there after the system software it should read something like "5.00 m33-6" the m33 part is the important part. if it doesn't have that then more than likely your psp doesn't have cfw installed. another is the "genA"genB"or "genC" these are the more popular cfw out there. so get your psp with one of these firmwares and once done you'll have many options to go from there.

There is no CFw 4.05m33 update, Dax not created it.!! The latest update for PSP Cfw is 5.00m33. You can find it by googling or see at my blog here!.

To change your psp from 4.05 official firmware you'll need pandora - magic stick (latest update DC7), because since high kernel released, cfw can be installing from 1.50 OF and 3.52 for fat(old model) psp.. and 3.60 for slim psp as starting point.

Hopefully this help, Pls post back should you need additional information, and also Show your Appreciation, to help other USER.

hi your previous psp version is 3.80 m33 if yes your using custom firmware that why you can play game to your memory stick the problem is you upgrade your psp firmware to sony official firmware 5.01 you reinstall your firwmware again using custom firmware like 5.00 m33-3 cfw below with m33 or OE

Do a Restore Default Settings and try.... also check the M33 Vsh menu values..(press SELECT button to pop up the VSH Menu) it should be like this. if any changes to change it to the default values which is shown in the picture.

To play game on your memory stick you'll need Custom Firmware installed
such as M33/OE on your PSP, else if you play a UMD. The last CFw Update
is 3.71M33-3.

What is version on your PSP? (on PSP Menu, move across to the
"Settings Menu". Scroll down, select to "System Settings" >
"System Information" and you should see version of your PSP.)

Here's at MyBlog, how to install CFw Guides. If this is the first time you've used the Memory Stick Duo, you must format it with PSP to create the proper PSP folder structure. then copy your game *.ISO/CSO into ISO folder, and DevHook folder to the root on your memory.

Hope this helpful/idea. Pls post back should you need additional information. ^_^